Create a Plane class. This class will represent a plane in our system. It should contain a constructor, two instance variables (an Airline enumeration, and a String) and three methods (getAirline,getModel, toString)
The constructor will take an Airline and String and use them to set up the instance variables.
- getAirline(): will return the Airline of the plane (e.g., Airline.United).
- getModel(): will return a String containing the model of the plane (e.g., "Boeing 737").
- toString(): will return the name of the plane's airline (e.g., "United"), followed by a star (" * "), and the model of the plane